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Finding the Third Proportional to 923 and 2,105

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Solution

The third proportional to 923 and 2,105 is: 4,800.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    923 : 2,105 = 2,105 : x
  2. Step 2: Convert to fraction form
    923/2,105 = 2,105/x
  3. Step 3: Cross multiply
    923x = 2,105 × 2,105
  4. Step 4: Simplify right side
    923x = 4,431,025
  5. Step 5: Solve for x
    x = 4,431,025/923
  6. Step 6: Final answer
    x = 4,800.68

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.